*Table A.13: Meal and Snack treatment effects on body mass index
cd ""

use "master_data_adults_child_s13456_shared.dta", clear

drop meal_control snack_control
gen meal_control=1 if treatment==2
replace meal_control=0 if treatment==1

gen snack_control=1 if treatment==3
replace snack_control=0 if treatment==1

drop if type_id=="X" // **Dropping newborns born during the three years of study
drop if id=="3885553B" //**error in the id number and empty data
drop if id=="3885553G" //**error in the id number and empty data
replace treatment=2 if id=="38855553B" //**retrieving the correct treatment for this id
replace treatment=2 if id=="38855553G" //**retrieving the correct treatment for this id
drop if id=="101aa22c" //**this id does not exist
drop if id=="27655663" //**outlier on many measurements

gen obese_var=1 if bmi_cat==2
replace obese_var=0 if obese_var==. & bmi_cat!=.

gen overw_obese=1 if bmi_cat==2 | bmi_cat==1
replace overw_obese=0 if overw_obese==. & bmi_cat!=.

*BMI
*Calculate z-scores for BMI
egen gendermax=max(gender), by(id_nb)
ge sex=(gendermax==1) 
replace sex=. if gendermax==.

drop zbmi pzbmi
egen zbmi = zanthro(bmi,ba,UK), xvar(months) gender(sex) gencode(male=1, female=0) ageunit(month)
gen pzbmi=normal(zbmi)

ge uwgt_child=(pzbmi<=0.02)
replace uwgt_child=. if pzbmi==.

ge normalw_child=(pzbmi>0.02 & pzbmi<0.85)
replace normalw_child=. if pzbmi==.

ge overw_child=(pzbmi>=0.85 & pzbmi<0.91)
replace overw_child=. if pzbmi==.  

ge overw_obese_child=(pzbmi>=0.85)
replace overw_obese_child=. if pzbmi==.  

ge obesew_child=(pzbmi>=0.91)
replace obesew_child=. if pzbmi==.

drop bmi_cat_child
ge bmi_cat_child=.
replace bmi_cat_child=-1 if uwgt_child==1
replace bmi_cat_child=0 if normalw_child==1
replace bmi_cat_child=1 if overw_child==1
replace bmi_cat_child=2 if obesew_child==1
drop bmi_cat_child

********************************************************************************
ge meal=(treatment==2)
replace meal=. if treatment==.

ge snack=(treatment==3)
replace snack=. if treatment==.

ge session1=(session==1)
replace session1=. if session==.

ge session3=(session==3)
replace session3=. if session==.

ge session4=(session==4)
replace session4=. if session==.

ge session5=(session==5)
replace session5=. if session==.

ge session6=(session==6)
replace session6=. if session==.

ge meal_session1=meal*session1
ge meal_session3=meal*session3
ge meal_session4=meal*session4
ge meal_session5=meal*session5
ge meal_session6=meal*session6

ge snack_session1=snack*session1
ge snack_session3=snack*session3
ge snack_session4=snack*session4
ge snack_session5=snack*session5
ge snack_session6=snack*session6


*PANEL A CHILDREN
*Perc BMI
xtreg pzbmi session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==1, i(id_nb)cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*BMI Z-score
xtreg zbmi session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==1, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*Overwieght/obese
xtreg overw_obese_child session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==1, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*Underweight
xtreg uwgt_child session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==1, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6


*PANEL B ADULTS
*Weight(kg)
xtreg mean_weight session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==0, i(id_nb)cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*BMI
xtreg bmi session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==0, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*Overwieght/obese
xtreg overw_obese session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==0, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6

*Adults
xtreg obese_var session3 session4 session5 session6 meal_session3 meal_session4 meal_session5 meal_session6 snack_session3 snack_session4 snack_session5 snack_session6 if child==0, cluster(hh_id) fe
test meal_session3 meal_session4 meal_session5 meal_session6
test snack_session3 snack_session4 snack_session5 snack_session6